/*
 * EmployeeSerializer.java
 * 
 * Copyright (c) 2008, Marshall Scorcio, Ralph Holzmann, 
 *                     Stewart Sweet, Tyler Hoersch, Jeffery Van Handel
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the University of Wisconsin Oshkosh nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS'' AND 
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 */

import java.io.*;

public class ScheduleSerializer
{
    private static String fileName = "schedule.dat";
    private static String status = "Schedule Loaded.";
    
    public static void saveSchedule(Schedule schedule) 
    {
        try
        {
            File file = new File(fileName);
            if (!file.exists())
            {
                file.createNewFile();
            }
        }
        catch (IOException e)
        {
        }

        try 
        {   
            FileOutputStream fileOut = new FileOutputStream(fileName);
            ObjectOutputStream out = new ObjectOutputStream(fileOut);
    
            out.writeObject(schedule);
                            
            out.close();
            fileOut.close();
        }
        catch(FileNotFoundException e) 
        {
            e.printStackTrace();
        }
        catch (IOException e) 
        {
            e.printStackTrace();
        }
    }
    
    public static Schedule loadSchedule() 
    {
        Schedule schedule = null;
        
        try 
        {
            FileInputStream fileIn = new FileInputStream(fileName);
            ObjectInputStream in = new ObjectInputStream(fileIn);
            
            schedule = (Schedule) in.readObject();
    
            in.close();
            fileIn.close();
        }
        catch (ClassNotFoundException e)
        {
            e.printStackTrace();
        }
        catch (FileNotFoundException e)
        {
            status = fileName + " not found. Adding a sample schedule.";
            
            schedule = new Schedule("Sunday, July 26, 2009"); 
            saveSchedule(schedule);
        }
        catch (InvalidClassException e)
        {
            status = "The schedule class format has changed. Adding a sample schedule.";
            
            schedule = new Schedule("Sunday, July 26, 2009"); 
            saveSchedule(schedule);
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }

        return schedule;
    }
    
    public static String getStatus()
    {
        return status;
    }
}

